(273) 
young branches densely covered with long snowy-white vil- 
lous oe buds also densely covered with white hairs; stip- 
ules small, about 2 mm. long, ovate; leaves nearly sessile, 
broadly lanceolate, 15-25 mm. long, acute, more or less 
pubescent above, tomentose beneath, more or less darkening 
in drying ; catkins borne at the ends of short leafy branches, 
2-3 cm. long ; bracts ogi oblong, light colored ; capsule 
conic, about 5 mm. long, tomentose, "tipped with a style 5 
mm. long. 
It is apparently nearest related to S. s¢récfa, from which it 
differs in the longer and rather denser hairs of the young 
twigs, the less pubescent and darker leaves, the longer cat- 
kins, and the smaller, less densely tomentose capsule. The 
type was collected on the Mackenzie River, J/ss #. Taylor, 
20. 60, 30 miles north of the Arctic Circle, in 1892, and is 
preserved in the Geological Survey of Canada (vo. 18839). 
23. SALIX sTRICT\A (Anderson); Salix desertorum stricta 
Anders. in DC. Prod. 167: 281; S. desertorun Bebb, 
in Coulter, Man. R. M. 338. 
It is evident that Mr. Bebb did not exactly know the true 
S. desertorum, as he states that Drummond, no. 657, repre- 
sents the typical form. Drunmond, xo. 658, mounted on the 
same sheet in the Torrey Herbarium, is quite different and 
matches Richardson’s specimens exactly. The leaves are 
only slightly hairy, and in the dry specimens dark. They 
are not at all yellowish silky as is the shrub found in the 
Rocky Mountain Region of United States. The catkins are 
longer than in our plant, and the bark is dark. In S. 
stricta the bark is often yellowish or grayish. 
Montana: Cutbank Creek, 1883, Candy, nos. 294 and 
286; Red Mountain, 1888, 7iveedy, no. 38. 
YELLOWSTONE Park: Lower Geyser Basin, August 4, 
1897, rydberg & Bessey, no. 3913. 
ALBERTA: Rocky Mountains, Drummond, no. 657. 
Lower Canapa: Mt. Albert, 1881, J. of. vllen. 
Wromine; Centennial Valley, 1895, Aven Nelson; Gros 
Ventre Creek, 1897, Tweedy, no. 298 
CoLorapo: 1873, fJohn Wolfe, no. 819; Twin Lakes, 
1872, 7. C. Porter. 
